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Detailed surface photometry for 79 (mostly dwarf) galaxies in the NGC 5044 Group area is analysed, revealing the existence of different morphologies among objects originally classified as early-type…
Polarization angular spectra of Galactic synchrotron emission on arcminute scales
- Physics
- 2002
We study the angular power spectra of the polarized component of the Galactic synchrotron emission in the 28 deg2 test region of the Southern Galactic Plane Survey at 1.4 GHz. These data were…
Tracing Star Formation in Cool Core Clusters with GALEX
- Physics
- 2009
We present recent results from a GALEX investigation of star formation in 16 cooling core clusters of galaxies, selected to span a broad range in both redshift and central cooling time. Initial…
Wide Area X‐ray Surveys for AGN and Starburst Galaxies
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- 2008
While often the point sources in X‐ray surveys are dominated by AGN, with the high sensitivity of modern X‐ray telescopes such as Chandra and XMM‐Newton normal/starburst galaxies are also being…
Precise surface gravitites of A-type stars from Asteroseismology
- Physics, Geology
- 2019
δ Sct are one of the most abundant pulsating stars in our Galaxy. In addition, they have moderate to fast rotations and periods of several hours. That makes them the suitable targets for studying the…
Cluster temperature profiles and Sunyaev–Zeldovich observations
- Physics
- 2004
Galaxy clusters are not isothermal, and the radial temperature dependence will affect the cluster parameters derived through the observation of the Sunyaev-Zeldovich (SZ) effect. We show that the…
Star formation and mass assembly in high-redshift galaxies
- Physics
- 2007
Aims. The goal of this work is to infer the star formation properties and the mass assembly process of high redshift (0.3 ≤ z 0.3, the star formation rate is correlated well with stellar mass, and…
Theoretical and observational studies of the central engines of active galactic nuclei
- Physics
- 1995
In Active Galactic Nuclei (AGN) the luminosity is so intense that the effect of radiation pressure on a particle may exceed the gravitational attraction. It was shown that when such luminosities are…
GOALS: The Great Observatories All-Sky LIRG Survey
- Physics
- 2009
The Great Observatories All-Sky LIRG Survey (GOALS ) combines data from NASA’s Spitzer Space Telescope, Chandra X-Ray Observatory, Hubble Space Telescope (HST), and Galaxy Evolution Explorer (GALEX)…
EROS: a Galactic Microlensing Odyssey
- Physics
- 2004
The EROS microlensing survey has monitored nearly 100 million stars for seven years, to search for halo brown dwarfs and compact objects in the Galactic disk. In this paper, we review the various…